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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| cmake_minimum_required(VERSION 3.16) | ||
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| project(inline-injector VERSION 0.1.0) | ||
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| add_executable(inline-injector main.cpp) | ||
| target_compile_features(inline-injector PRIVATE cxx_std_20) | ||
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| set_target_properties(inline-injector | ||
| PROPERTIES | ||
| RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/tools_bin" | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| #include <iostream> | ||
| #include <fstream> | ||
| #include <string> | ||
| #include <filesystem> | ||
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| std::string readFile(const std::filesystem::path& path) | ||
| { | ||
| std::ifstream file{path, std::ios_base::binary}; | ||
| if (!file) | ||
| { | ||
| throw std::runtime_error{"Could not open " + path.string()}; | ||
| } | ||
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| file.seekg(0, std::ios::end); | ||
| std::string content; | ||
| content.resize(file.tellg()); | ||
| file.seekg(0, std::ios::beg); | ||
| file.read(&content[0], content.size()); | ||
| return content; | ||
| } | ||
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| int main(int argc, char** argv) | ||
| { | ||
| if (argc != 4) | ||
| { | ||
| std::cout << "Expected 3 argument: <index.html> <import_scripts> <import_styles>, but got " << argc - 1 << "\n"; | ||
| return 1; | ||
| } | ||
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| const auto index = std::filesystem::path{argv[1]}; | ||
| const auto importScripts = std::filesystem::path{argv[2]}; | ||
| const auto importStyles = std::filesystem::path{argv[3]}; | ||
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| std::string indexHtml; | ||
| try | ||
| { | ||
| indexHtml = readFile(index); | ||
| } | ||
| catch (const std::exception& e) | ||
| { | ||
| std::cout << "Error reading file: " << e.what() << "\n"; | ||
| return 1; | ||
| } | ||
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| // make relative path of import scripts to index file: | ||
| const auto relativeImportScriptsFile = std::filesystem::relative(importScripts, index.parent_path()); | ||
| const auto relativeImportStylesFile = std::filesystem::relative(importStyles, index.parent_path()); | ||
| const auto binIndex = | ||
| std::filesystem::relative(index.parent_path() / ".." / "bin" / "index.js", index.parent_path()); | ||
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| const std::string importScriptsHtml = "\t<script type=\"module\" defer>\n\t\timport \"" + | ||
| relativeImportScriptsFile.generic_string() + "\";\n</script>\n"; | ||
| const std::string importStylesHtml = | ||
| "\t<style>\n\t\t@import \"" + relativeImportStylesFile.generic_string() + "\";\n</style>\n"; | ||
| const std::string importBinIndexHtml = | ||
| "\t<script type=\"module\" defer>\n\t\timport \"" + binIndex.generic_string() + "\";\n</script>\n"; | ||
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| // find end of header </head> from behind in indexHtml: | ||
| const auto headEnd = indexHtml.rfind("</head>"); | ||
| if (headEnd == std::string::npos) | ||
| { | ||
| std::cout << "Could not find </head> in " << index << "\n"; | ||
| return 1; | ||
| } | ||
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| // insert importScriptsHtml before headEnd: | ||
| indexHtml.insert(headEnd, importScriptsHtml); | ||
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| // insert importStylesHtml before headEnd: | ||
| indexHtml.insert(headEnd, importStylesHtml); | ||
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| // insert importBinIndexHtml before headEnd: | ||
| if (indexHtml.find(binIndex.generic_string()) == std::string::npos) | ||
| indexHtml.insert(headEnd, importBinIndexHtml); | ||
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| // write indexHtml back to index file: | ||
| std::ofstream file{index, std::ios_base::binary}; | ||
| if (!file) | ||
| { | ||
| std::cout << "Could not open " << index << " for writing\n"; | ||
| return 1; | ||
| } | ||
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| file.write(indexHtml.data(), indexHtml.size()); | ||
| return 0; | ||
| } |